Baking-machine.



W. W. TURNBULL.

BAKING MACHINE.

Anmon'ron FILED 11110.15, 1910.

- l1,009,355. Patented Nov.21, 1911.

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APPLICATION FILED DEO. 15, 1910. K Y `4 1,009,355. Patented 11011.21, 1911.

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BAKING MACHINE. .122110.11101 nu DBO. 15, 1910. A I Patented NOV. 21,1911.

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' 'UNITED STATES PATENT OFFICE. f

wim!) w. TUBNBULL, oF COLUMBUS, omo.

nanna-MACHINE.

To all whom Macy camera.' Be itknown tnat I, WERD W. TURNBULL,:a

citizen of the United States, residing'at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Baking-Machines, of Which the followin is a specification.- y

My invention re atesto an improvement in baking machines and the objects of my 'invention are to provide anim roved construction of baking machine particularly adapted for the baking of cake-like products, .such

asare adapted for the making of ice cream cones; to provide'an improved machine ofthis class so constructed as to obviatethe necessity of inverting the baking plates dur-l ingl the `baking operation; to provlde an in* ring or table; to protegrally formed baking u automatica y raislto provide improved means for heating the use of which ordinary .batter will be readilyv batter contained on the lower bakin` plate from both -gthe upper and lower side t ereof, and to' otherwise produce a simple, inexpensive and effective baking mechanism by the converted into bakingproducts. These objects I accomplish in the manner illustrated in the accompanying drawings-in which:

Figure 1 lsa side elevatlon of my 1mproved machine, Fig. 2 1s a sectional vlew on line of Fig. 3, Fig. 3 is a plan view,

and, Fig. 4 is a view in elevat-ion of' the machine, at right angles with that shown in "Fio 1. gimilar numerals refer to similar parts throughout the several views.

In carrying out my invention, I employ a suitable upright supporting frame comprising a pair of vertical standards l, the upper sides of which arekbridged by a horizontal frame base 2. Rising at intervals from the upper side of the supporting frame,

arebearing brackets 3 in which are pivotally mounted supporting wheels or rollers 4.

Upon these rollers is movably supported the closed side 5a .inner wall of a channeled baking ring 5, the of which is uppermost, as

shown. Rising from the horizontal top member 2 of thesupporting framecentralliy of said frame is a fixed vertical pin or sha 6, upon which are urnaled the lcentral portions of connected radially arranged cross frame `bars 7, the outerends of the latter 'provided with upwardly opening Speoication ot. Letters Patent. Patented Nov, 21, 1911 Application illed December 15, 1910. Serial No. `597,550.

connecting with the inner and upper portion of the channeled baking ring 5. By thus pivot-mg .the frame members 7 upon the shaft or in 6,v it is obvious that the baking ring 5 wi l be free to rotate about said shaft. At desirable intervals on the inner side and upper portion of thebaking ring, I provide figred brackets 8, in each pair of which is pivoted the outer .portion of an inwardly extending lever o r .handle-like exftension 9a of a baking plate 9, these baking lates being adapted to lie horizontally adiacent to eachotherupon'the upper surface of the baking ring 5,'.whichsurface as indicated more 'clearly vin Fig. `preferably corrugated.

It -will be-notcd -that the brackets 8 are pockets or Journals, This special formation has two definite functions. while the rear end of Aeach plate is hinged t0 its bracket, vthe said rea'r end is permitted to` have a slight upward movement by way 3 of the drawing, is i The first of these is that,

of automatic adjustment when it settles into operative position upon the batter. By this means, it'becomes possible to produce a finished product which is of the same thick-` ness throughout inasmuch as the upper plate naturally assumes a parallel relation to the `Working surface of the baking ring. It Will further be seen'that this automatic capability of adjustment will regulation of the thickness of the finished product, thisV being done by the provisionof dierentl Weights Y The second function vof'this structure, resides in the fact plate elements are readily removable. first of these features is of extremo pocket hinge one thin edge, inevitably renders the prod,-

f8.5 permit of a more ready* of upper baking plates.v

that the upper s The? importance, since theformation of the batter twith.

uct inferior. Thus itwill bc seen that, after`-`r the batter is deposited upon the lower bakv ing plate or ring, the hinged baking plate is lowered and settles upon the; batter. When. initially lowered, the. surface near. the

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inne-r edge of the hinged plate is too close to the ring in comparison with the remaining surface Aof the baking plate. However, the tendency of the-batter t-o rise is sufficient to raise this inner edge until thereis an. even disposition of the surface of the hinged plate 1 relative to the surface of the ring. As before stated, this is made possibleby the 4peculiar form of hinge structure which perymits this compensatlng movement after lowbaking plates 9 is formed with an outwardly projecting' finger-lug 9b which when the bak ing plates are in their horizontal positions on the baking ring, project beyond the periphery of the latter.

Suitably supported' from the top of theY supporting frame and within the circle formed by the central opening of the baking ,1-ing, is a channeled cam bracket 10, the

greater portion of which lies horizontally and parallel with the inner vertical wall of the baking ring 5. Toward one end, hown ever, this channeled bracket or cam member is inclined upwardly and inwardly, as indicated more clearly at 10a in Figs. 2 and 3.v

11 represents a horizontal shaft which extends from the outer side of the machine to a point above the central portion of the supporting frame and below the baking ring, This shaft is provided with suitable.

bearings 11a and on its o -uter end carries a gear wheel 12. On its inner end the shaft 11 carries a disk 13 and at a pointbeneath the outer portion of the baking ring, said shaft carries a pinion 14, the teeth of which mesh with those of a circular rack 15 which is formed with or carried by the outer portion of the baking ring 5. The facerof the disk 13 has projecting eccentrically therefrom a pin 1.6 which engages an elongated slot 17 in the central portion of the inclined trip lever 18. The lower end of this trip lever is pivoted at 19 to a bracket 20 whichV depends from the frame member 2 toward one side of the supporting frame. -The upper end portion of the trip lever 13 has a spoon-like termination 18, the underside of which is adapted when the upper portion of said-trip lever is swung downward, to engagethe upper side of and depress an opposing handle extension '9a of a baking plate 9, this operation being-more clearly set forth hereinafter.

On the inner side of the gear wheel 12, the shaft 11 carries a cam wheel 21, which is provided with an irregular peripheral groove 22 with which groove engages the lower end of an upwardly extending and inclined rod 23, the bifurcated terminal portion of which is connected with the outer endmof a piston rod 24 which is mounted to reciprocate within a suitable batter supply pump cylinder 25, this pump cylinder being provided with the usual batter inlet pipe 26 .and an inner end outlet opening for dis-` charging batter at each inward movement of the piston rod, on to the upper side of a suitable source of power.

theV baking ring. The construction and operation of this pump,however, are not herein described in detail or claimed, for the reason that the means of discharging batter on to the baking ring, is not at this time a'. part of my invention and asthecbatter may be applied to the baking ring by hand or by the use of a suitable form of discharging pump,

such as that shown in the pending application of myselfand Carl R. Taylor, Serial Number 521,341, filed Oct. 6, 1909.

At a suitable point on the `outside and adjacent to the upper portion of thebaking ring 5, I support a short inclined lug 27, the upper portion of which projects slightly above the baking ring. A

Carried by frame members 28 which lead from the upper end of the: stationary shaft 6, is a curved heat casing 29 of channel form, which extending slightly above the baking ring 5, covers preferably about three-fourths of said baking ring. From this heat casing, rise at intervals, outlet pipes 30. lVithin ,the heat casing is supported a curvedgas "conducting and burner pipe 31, ythe latter being formed with burner openings in its upper side. This gas pipe is supplied with gas from a pipe arm 32 which extends from the casing 29 downward and is con.

nected through a suitable mixer 33 with a gas supply pipe 34. Within the baking ring 5, I provide a circular gas burner 35 which is supported on suitable brackets 36 which rise from the frame top 2. This gas burner 35 is connected through a pipe 36 with a gas supply pipe 37 38 represents a horizontal shaft which is journaled in the frame members 1 and which saV on its outer end carries a power belt wheel 39 which is adapted to receive a belt from This shaft 38 carries within the framework a belt cone or taperingl belt wheel 40. 41 also represents a horizontal shaft which is journaled in the lowerL portions of the frame standards 1 and this shaft also carries a belt cone which is indicated at 42. On its outer end the shaft 4l carries a belt wheel 43, over which passes a belt 44, the latter running over a belt wheel 45 which, is mounted upon the stubY 'shaft 46 projecting from the supporting frame above the belt wheel 443. This stub shaft carries on its outer end a pinion 46, the teeth of which mesh with the gear wheel '12 heretofore described. The outer portion of the stub shaft 46 has a fixed connection with a clutch collar 47 and between the latter and the wheel 45, said stub shaft has keyed to slide thereon a clutch sleeve 48, the latter being` providedwith the usual form of operating lever 49 by the inward or outward movement of which the teeth of the clutch sleeve are thrown out of or into engagement with the corresponding recesses of the clutch member 47.l l

of the baki willbe subjected to the heat fromthe upper ,ment is imparted tothe wheel ingthat theclutchmembe'jr 48 is thrown into lin.,-op'eratioru it=will .be understood that power trpnsmitted to the belt wheel39, its, l shaft F38 and cone 40,. will be transmitted .through a belt 50 to the cone .42, its shaft 41 an belt wheel 43.` T hrou `h the rotation of the belt wheel 4.3 a desirab erotary move- 45 and assumburner 31 and the lower burner 35, thus insuring a proper degree of heat being appliedto both the'upper and lower side of the batter. As one of the upper bakingplates 9 approaches the end of a complete revolution, it will be understood that its lug 9b` will by contact with the inclined lug 27, be slightly raised, thus providing 4an initial separation of the upper baking member 9 from the baked product. At the same time, the terminal portion of the lever extension I i or linger 9& of the baking plate, whichfhas been as described, slightly elevated from the cake or baked product, is depressed through the downward swinging movement 'of the 'lever 18, said lever operating in its downward movement .to brace the lower endportiony of the baking plate extension 9 into/A the mouthV of the channel member 10. As

the baking plate extensions thus successively,

are pressed lnto engagement with said channel member, it is obvious that the latter Will serve to holdthe upper baking plates 9 in the elevated or raised positions until the eX- tensions 9a of the baking plates pass upward and outwardV through the opposite end portion 10a of the channel member 10. As each 'plate thus receives-its first elevation, the

baked product isrenoved from the upper rside of the baking ring and when the upper\ side baking plate, still in the elevated posi-A4 Ation, reaches a point opposite the discharge end of the pump 25, apredetermined quantity of batter -is applied to the baking ring through either said pump cylinder or otherwise. .As the baking ring extension then paes out of the upwardly inclined portion 10a of the channel member 10, it is obvious that said baking plate will drop downward to its normal position over the quant-ity of batter which has been .deposited uponA the baking ring. By this operation, it will readily be understood that the baked products may be successively removed from the bakt emessi" l their-*lowered ing ring .throxighy they `'automatic 'i raising tlx'ewupper baking plates and thatv these ,ak-

wel

inggplates will successively be. returnedxto positions upon the newly applied batter. Heretoforemeans have ordinarily 'been provided in machines of--this class, whereby two hinfged baking plates havebeen employed oreach'portlon of batter and the heat ybeing'ap lied from the lower side only. Means have a so been provided for the auto matic inversion ofthe baking plates. By

the construction which `Ivv have described, it

bakingv latesni's obviated, inasmuch as heat is supplied from -both below and above.

`It will readily be understood that the rate of speed at which the bakin ring moves, may be varied byshifting' theelt 50 to dif,-

ferent positions upon the 'cones 40 and-42 and in order toV accomplish this, Phave pro- ,vided an ordinary belt shifting bar such as is indicated at 5,1,` this bar being slidably mounted in a fixed' frame arm '52 and said bar being provided with the usual fingers 53 adapted to embrace opposite edges of the belt 50.

is obvious that the necessity of invert-ing the From the foregoing description, itwill be seen that simple and efficient means are herein provided for accomplishing the ob` jects of the invention, but while the elementsv shown and described are well'ladapti 'ed to servev the purposes for which they are intended, it is to be understood that the invention'is not limited to the precise construction set forth, but includes within its purview such changs as Amaybe made within the scope of the appended claims'.

L A bakingmachine comprising a rotas" means for maintaining said plates in ele- A "vated position during'a determinate! period of the rotation, and independent means' for initially elevatlng said plates. '1

2. A baking machine comprising a vrota vated position during a determinate period of the rotation, and independent means for .initially elevatmg said platesin 'successive steps. 3. A

vated position during a determinate period of the rotation, and independent means for initially elevating said plates in successiv steps, said means comprising relatively-in-` dependent units.

4. .A baking machine comprising a rota.

' tableelement, hinged plates carried thereby, -means for maintaining saidplates-inelebaking machine comp-rising a rotatable element, hinged plates carried thereby, means for maintaining said plates'in'eletable'element, hinged plates carried thereby,A

means fonmaintaining said plates in elevated relation during a determinate period ofthe rotation and a lever for automatically ics table element, hinged plates carried thereby, 1 .4

I moving said plates into subjection to said means, and a means for slightly raising said plates just preceding movement by said levers.

6. A baking machine comprising sectional traveling baking units, means for maintain:

4 ing the sections of said traveling units separated for a determinate interval in the period of travel, and independent mechanism for initially separa-ting said sections.v

7. A baking machine comprising sectional travelingbaklng units, means for maintaining the sections of said units separated for a determinate interval inthe period of travel and independent mechanism for separating said sections in successive steps prior to the operation of said means'.

8. n a machine of the character described, the combination with a supporting frame` and a baking ring rotatably mounted on said frame and having a rack on its lower side, ofa plurality of baking plates hinged in connection with' said baking ring, a fixed channel member Within the circle of said baking ring and having an upwardly inclined termination, a shaft journaled beneath said baking ring, a disk on said shaft, a pivoted lever eccentrically fulcrumed on said disk adapted to successively engage and elevate said hinged baking plates, a pinion wheel carried by said shaft and engaging said rack, and means for operating said shaft.

9. A baking machine comprising. a rota- -table baking ring, hinged plates carried thereby and forming closed pans with said ring, a hood superposed above a 4portion of said ring, heating means within said hood, and heating means within said ring, said two heating means serving to heat each of the said'pans from both sides throughout passage under said hood.

10. A baking machine comprising al rota-L table baking ring, hinged plates carried thereby and forming closedpans with said said pans from both sides throughout pasl sage under said hood, and means for elevating said plates after passage from bef neath said hood.

heating means within said ring, said two heating means serving to heat each of the said pans from both sides throughout passage under said hood, means for elevating said plates after assage from beneath said hood, and means or elevating said plates by `a combined cam and leverage action, 'and -means for elevating said plates by an initial cam action, a subsequent leverage and a still subsequent cam action.

`l2. A baking machine comprising a rotatable baking ring having its baking surface formed substantially in one continuous horizontal pla-ne, a hood lsuperimposed over a 'portion of said ring, hinged plates carried on said ring, and heating means.

13. A baking machine comprising baking units formed of relatively separable plate members and hinge`members constructed to permit of a relative spreading action. p

14. A baking machine comprising baking units formed of relatively separable plate members, a pocket hinge element, and a pintle hinge element complelnental thereto, said pocket hinge element being open at one side to permit relative, spreading and segregation of said elements.

In testimony whereof I aflix my, signature in presence of two witnesses.

W ERD W'. TURNBULL. Witnesses:

SiLvIo PAIRIs,

ELIZABETH GoRLY.

. DISCLAIMER- 1,009,355.-Werd W.` Turnbull, Columbus, Ohio.4 BAxING-MAGHINES. Patent dated November 21, 1911. Disclaimer filed September 19, v1914, by The Turnbull Manufacturing 0ompany,assignee. Enters this disclaimerv i j To that part of page 1, lines 18, 19, and 2 0 of the body oisaid specification,

Y l which is in the following words, to wit:

Disclaimer in Letters Patent No. 1,009,355.

to provide improved means for automatically raising and lowering the movable baking plates. l and to claims 1 to 8, inclusive, which are in the following words, to wit:

1. A baking machine comprisin arotatable element, hinged plates carried, thereby, means for maintaining sai plates in elevated position vduring a deternintzste period of the rotation, and independent means for initially elevating said P a 2. A baking machine comprising a rotatable element, hinged plates carried thereby, means for maintaining said plates in elevated position during a determinate period of the rotation, and independent means for initially elevating said plates in successive steps. 4

3. A baking machlne comprising a rotatable element, hinged plates carriedI thereby, means for maintaining said plates in elevated position during a determinate period of the rotation, and independent meansfor initially elevating' said? .plates in successive steps, said means comprising relatively independent units.

4; A baking machgine comprising a rotatable element, hinged'plates carried thereby, means for maintaining said' plates in elevated relation durin a determinate period of the rotation and a lever for automatically moving sai plates into subjection to said means.

5. A bakingmachine comprising a rotatable element, hinged plates carried. thereby, means for maintaining said. plates in elevated position during a determinate periodof the rotation, a lever for automatically moving said plates into subjection to said means, and a means for. slightly raising said plates just preceding movement by said levers. f

6. A baking machine comprising sectional traveling baking units, means for maintaining the sections of said traveling units separated for a determinate interval in the period of travel, and independent mechanism for initially separating said sections. r f

7. A baking machine comprising sectional travelin baking units', means for maintaining the sections of said units separated for a eterminate interval in the period of travel and independent mechanism for separating said sections in succesj sive steps prior to the operation of said means.

8. In a machine of the character described, the combination with a supportingw'" frame, and a bakin ring rotatably mounted on said frame and having a rac on its lower side, o a plurality of baking plates hinged in connection vwith,l said `baking ring, a fixed channel member within 'the circlefof said bakingv andf having an upwardly inclined termination, a shaft journaled beneath j ring, a disk on said shaft, a pivoted lever eccentrically fnlcrumed .on-

f y adapted to successively engage and elevate sald hinged baking plates,` apinionqwheel carried by said shaft and engaging said rack, and means `for said shaft. o

[Oficial Gazette, September 2.9, 1914.] 

